Oil-burner.



Patented 0st. 3,1899.

J. fn'. DUNCAN.

0| L B U R N E R. (Appucmon am nn. 1s, ieee.)

(No Model.)

Tn: wams PETER: Co, PnoYoAL\1Ho,.wAsmNnwN. n. n.

NITED STATES PATEN Finca.

JOHN R. DUNCAN, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO SAMUEL V. PERROTT,OF SAME PLACE.

OIL-BURNER.

SPECIFICATION forming part of 'Letters PatentNo. 634,288, dated October3, 1899.

Application led January 18, 1899. Serial No. 702.573. (No modelf To allwhom t may concern,.-

Beit known that I, JOHN R. DUNCAN, of Indianapolis, county of Marion,and State of Indiana, have invented a certain new and useful Oil-Burner;and I do hereby declare that the following is a full, clear, and enactdescription thereof, reference being had to the accompanying drawings,in which like figures refer to like parts.

1o This invention relates to a novel construction of an oil-burner thatis simple and economical in operation as well as construction and isefficient by way of causing a high degree of volatilization of the oiland its admixture, whereby thorough combustion is secured.

The full nature of my invention Will moreV fully appear from theaccompanying drawings and the description and claims following. zo Inthe drawings, Figure I is a plan of my oil-burner. Fig. 2 isa verticalsection on the line B B of Fig. 1. Fig. 3 is a vertical section of theupper portion on the line A A of Fig. l. Fig. 4 is the same on the lineC O of Fig. l. Fig. 5 is a horizontal section on the line D D of Fig. 2.

In detail Iprovide an inner annular chamber l, into which the oil isoriginally introduced through the supply-pipe 2. nular chamber l has adeiecting-plate 3 (seen in Fig. 2) to direct the flow of oil in thechamber l in a certain direction, as shown. After making almost acircuit the oil or gas passes through the outlet-opening 4 into theannular chamber 5, that surrounds the chamber l. A9 the outlet 4 thereis another deflectingplate 23 to direct the oil or gas through the saidopening 4 into the said chamber 5. In the beginning of the operation orafterward volatilization is caused by placing oil in the oil-pan 7, itbeing preferably made of asbestos, and burning it so that the iiame willheat the chamber 1. It is observed that the chamber l is so placed as toreceive the direct heat from this flamein fact, its bottom is made wide,as shown, in order to distribute the oil over it-and that more of thesurface of the chamber will receive the heat from the flame. The oil-pan7 is suspended and secured to the 50 main part of the oil-burner by thebars 8. In

This an-v this way the oil is heated and the initial heat ing andvolatilization of the oil are effected, and afterward this result isobtained from the burner itself, as will be hereinafter explained.

The Vapor passes through the annular cham- 5 5 ber 5 in a reversedirection as compared to chamber l, and after passing under the inletopening or pipe, as seen in Fig. 5, it escapes through the outlet G intothe annular cham` ber A7. This chamber 7 is substantially a 6o part ofthe pipe formation, as shown. While the Vapor is passing through thischamber it is superheated and highly volatilized by direct contact ofthe ame from the burner and from it passes through the pipe 9 and the 65chamber l0 into the mixing-chamber 1l. The outlet of the chamber l0 isvery small and is `so placed as to register with the inlet-openriphery,that rests upon theupper wall of the chamber 5, as shown in Fig. 2. Thisdepending iiange 13 is perforated adjacent to its lower edge, so thatthe gas escapes through said perforations and immediately over the upperwall of the chamber 5. This casting is provided with a nger-piece 14above and a series of depending ribs l5 below, as shown in Fig. 2. It isalso provided with a somewhat horizontally-extending flange 16 beyond 9othe depending flange 13.

It is observed that the chamber 7 is elevated, as seen in Fig. 2, abovethe upper walls of the other chambers, and especially above the upperwall of the chamber 5, so that the flame issuing from the burner willdirectly contact with said chamber 7 It is assisted chamber 7.

chamber 7 to be highly volatillzed; also, the tlamc from the burner toheat directly the chamber and indirectly heat the chamber l and theircontents. It is noticeable that in this burner the heat applied to thevarious chambers is in proportion to the vapors or volatilizaed form ofthe contents. Thus the heat applied to the chamber 1 is very slight andindirect, although suIIicient. By reason of this the oil will not 'beburned, as is the trouble in many burners. In the chamber 5 while theremay be some oil it will be at the bottom and the main contents will bevapor in the upper part, which is directly heated, and in the chamber 7there is no oil, but all vapor, and it is provided with a high heat.lhis makes the action ot the burner coincide with the naturaltransformation of the oil to th'e gas.

In the chamber 10 I provide an outlet in the lower part thereof for anyimpurities, dirt, the., which is closed by the plug 17. 'lheseimpurities are deposited by gravity as the valpor makes the sharp turnfrom pipe 9, and

the detlecting-wall .t8 assists in accomplishing this result.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

1. An oil-burner including a retort formed of a series of annularchambers, means for introducing oil into said retort, a burner, saidburner and the chambers of the retort being relatively so arranged as toprogressively increase the heat applied to the oil from the inlet intothe retort to the outlet there-from, and means for conveying the vaporfrom the retort to the burner.

2. An oil-burner includinga retort formed of a series of annularchambers, one provided with a relatively broad bottom, the next one witha relatively broad top, and the third higher than the other two, meansfor introducing oil into-the chamber with the broad bottom, means belowsaid chambers for initially heating them, a burner so formed as todeflect the flame directly against the upper walls of the outerchambers, and ,means for conveying the vapor from the last cha-mber inthe series to the burner.

In witness whereof I have hereunto aftixed my signature in the presenceof the witnesses herein named.

.TOIIN R. DUNCAN.

\Vitnesses:

RoBT. D. IIAwKINs, AMANnAs N. GROU'I.

